@Diego_B  Search online with "iPhone 15 pro gets warm/hot", seems you are not the only one have the hot phenomenon: https://discussions.apple.com/thread/255147042?sortBy=best

  @Diego_B  you may try to uninstall the Tapo app, clean caches, reinstall the app...

If your iPhone is overheating, it can definitely be a bit worrying, but it’s also something that happens from time to time, especially if you're using it a lot or in certain conditions. The good news is, there are a few things you can do to cool things down and prevent it from happening too often.

First, let’s talk about why your iPhone might be heating up in the first place. iPhones can get hot when they’re working hard—things like running graphically intense apps, playing games, or using the camera for long periods of time can cause the temperature to rise. Also, having too many apps open in the background can add to the strain. If your phone feels like it’s getting too hot, try closing some of those apps and giving it a bit of a break. Just swipe up from the bottom (or double-click the home button if you have one) to close out everything you’re not actively using.

Another major reason for overheating can be environmental. If you're out in the sun or in a hot place, your iPhone can easily heat up just from being in a warm environment. If you notice your phone getting hot outside, try to move it to a cooler area or shade, and let it cool down. iPhones are designed to work best between 32 and 95°F (0 and 35°C), so being in extreme heat will push it past its comfort zone. Also, avoid leaving it in a hot car or under direct sunlight for long periods of time.